SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00741567000' / Observation ID TARG_ID = '741567 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 510636818.1943 / Start time DATE-OBS= '2017-03-08T03:33:38.2' / Start Date TSTOP = 510636923.78738 / Stop time DATE-END= '2017-03-08T03:35:23.8' / Stop Date CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number DATE = '2017-03-08T03:35:12' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -18.72064 / UTCF at TSTART CHECKSUM= 'iEeOkDcOiDcOiDcO' / HDU checksum updated 2017-03-08T03:35:12 DATASUM = ' 0' / data unit checksum updated 2017-03-08T03:35:12 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 18 / width of table in bytes NAXIS2 = 100 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'RATE ' / label for field 2 TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'count/s ' / physical unit of field TTYPE3 = 'XRTMODE ' / label for field 3 TFORM3 = '1I ' / data format of field: 2-byte INTEGER EXTNAME = 'RATE ' / name of this binary table extension MESGNAME= 'XRT_LIGHTCURVE' / Name of the message COMMENT XRTMODE values COMMENT 1=null 2=Short Image 3=Long Image 4=Pile-Up Photodiode COMMENT 5=Low Rate Photodiode 6=Windowed Timing 7= Photon-Counting COMMENT 8=RAW data 9=Bias map 10=Stop TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00741567000' / Observation ID TARG_ID = '741567 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number EQUINOX = 2000 / Equinox RADECSYS= 'FK5 ' / Coordinates system TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2017-03-08T03:35:12' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 510636818.1943 / Start time DATE-OBS= '2017-03-08T03:33:38.2' / Start Date TSTOP = 510636923.78738 / Stop time DATE-END= '2017-03-08T03:35:23.8' / Stop Date UTCFINIT= -18.72064 / UTCF at TSTART TIMEPIXR= 0. / Bin time beginning=0.0 middle=0.5 end=1. HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'LIGHTCURVE' / Time ordered data HDUCLAS2= 'TOTAL ' / Source + background HDUCLAS3= 'RATE ' / Data provided as rate NUMBINS = 100 / Number of valid bins in the lightcurve TRIGGER = 741567 / Trigger Number XRA_OBJ = 260.088348388672 / [deg] XRT RA location GRB or Object XDEC_OBJ= -24.8701133728027 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.593079984188 / TSTOP - TSTART ONTIME = 107.359703063965 / Time on target LIVETIME= 107.359703063965 / Ontime multiplied by DEADC EXPOSURE= 107.359703063965 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -18.72064 / [s] UTC Correction TIME UTCCSEC = -19 / UTC Correction Seconds UTCCSUBS= 13968 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 510636923.84604 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 510636923 / ccsds PacKeT SEConds PKTSUBS = 42302 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'eXFNhX9KeXCKeX9K' / HDU checksum updated 2017-03-08T03:35:12 DATASUM = '4086782471' / data unit checksum updated 2017-03-08T03:35:12 END Ao1AokAo->@c4(Ao>@dAoO@arAoaR@UAorU@] Ao@bdAom@b@Ao'|@] Aom@b4AoȲ@b@AoH@gbAo?@aAo@`ܠAo! @c4(Ao"s@iAo#0V@apAo$A@\= Ao%R?@c4(Ao&d)@^ Ao'un@c4(Ao( @cR"Ao)j@dAo*@y@k Ao+@c.Ao,6@ZAo-E@_% Ao.X@\aAo/@fnAo1`@VAo2"*o@`(ĠAo33p@`Ao4D@YJAo5U;@[mAo6gB@b:Ao7x@f{Ao8W@^5 Ao9f@^ Ao:Yu@` ʠAo;@dAAo<2@c.Ao=,@cAo>r@gbAo@N@arAoA @`AoB%Cl@f]AoC6@b@AoDG)@dAoEY@gkPAoFj\@`AoG{@`AoH@e1AoI-b@_@AoJs@f?AoK@c.AoL~@gMVAoME@cR"AoN@iAoP@g>AoQY@bbRAoR(]@apAoS9@eAoTJt@gbAoU\/@XAoVmu@d#AoW~@b@AoXP@dAoYG@avAoZ @eAo[@YAo\z@cpAo]_@bbRAo^@f?Ao`F@d}Aoa1@cAob+v@apAoc<@aTAodNq@d#Aoe_I@`dAofp@] 1 Aog=@aAohL@_١@Aoi`@avAoj @b:Aokg@iAol3@n Aomx@\I Aon@c.Aop C@b4AoqJ@eAor.@b&^Aos?^@[yAotQ@^5 Aouba|@d}Aovs@cAow9@h,Aox4@g8Aoyz@arAozU@`(Ġ